Lipid accumulation potential of oleaginous yeasts: A comparative evaluation using food waste leachate as a substrate

Johnravindar Davidraj; Obulisamy Parthiba Karthikeyan; Ammaiyappan Selvam; Kumarasamy Murugesan; Jonathan W.C. Wong

doi:10.1016/j.biortech.2017.06.151

Lipid accumulation potential of oleaginous yeasts: A comparative evaluation using food waste leachate as a substrate

Johnravindar Davidraj, Obulisamy Parthiba Karthikeyan, Ammaiyappan Selvam, Kumarasamy Murugesan, Jonathan W.C. Wong^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

46 Citations (Scopus)

Abstract

In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L⁻¹ prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L⁻¹ inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.

Original language	English
Pages (from-to)	221-228
Number of pages	8
Journal	Bioresource Technology
Volume	248
DOIs	https://doi.org/10.1016/j.biortech.2017.06.151
Publication status	Published - Jan 2018

Scopus Subject Areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

User-Defined Keywords

Biolipids
Food waste
Oleaginous yeast
Pre-treatment
Volatile fatty acids

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2017.06.151

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title = "Lipid accumulation potential of oleaginous yeasts: A comparative evaluation using food waste leachate as a substrate",

abstract = "In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L−1 prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L−1 inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.",

keywords = "Biolipids, Food waste, Oleaginous yeast, Pre-treatment, Volatile fatty acids",

author = "Johnravindar Davidraj and Karthikeyan, {Obulisamy Parthiba} and Ammaiyappan Selvam and Kumarasamy Murugesan and Wong, {Jonathan W.C.}",

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T2 - A comparative evaluation using food waste leachate as a substrate

AU - Davidraj, Johnravindar

AU - Karthikeyan, Obulisamy Parthiba

AU - Selvam, Ammaiyappan

AU - Murugesan, Kumarasamy

AU - Wong, Jonathan W.C.

PY - 2018/1

Y1 - 2018/1

N2 - In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L−1 prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L−1 inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.

AB - In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L−1 prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L−1 inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.

KW - Biolipids

KW - Food waste

KW - Oleaginous yeast

KW - Pre-treatment

KW - Volatile fatty acids

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SN - 0960-8524

VL - 248

SP - 221

EP - 228

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Lipid accumulation potential of oleaginous yeasts: A comparative evaluation using food waste leachate as a substrate

Abstract

Scopus Subject Areas

User-Defined Keywords

UN SDGs

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